From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 30 Aug 2025 16:53:58 -0700
Subject: Update to SDL3

---
 src/contrib/SDL-3.2.20/docs/INTRO-cmake.md | 57 ++++++++++++++++++++++++++++++
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 create mode 100644 src/contrib/SDL-3.2.20/docs/INTRO-cmake.md

(limited to 'src/contrib/SDL-3.2.20/docs/INTRO-cmake.md')

diff --git a/src/contrib/SDL-3.2.20/docs/INTRO-cmake.md b/src/contrib/SDL-3.2.20/docs/INTRO-cmake.md
new file mode 100644
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+++ b/src/contrib/SDL-3.2.20/docs/INTRO-cmake.md
@@ -0,0 +1,57 @@
+
+# Introduction to SDL with CMake
+
+The easiest way to use SDL is to include it as a subproject in your project.
+
+We'll start by creating a simple project to build and run [hello.c](hello.c)
+
+# Get a copy of the SDL source:
+```sh
+git clone https://github.com/libsdl-org/SDL.git vendored/SDL
+```
+
+# Create the file CMakeLists.txt
+```cmake
+cmake_minimum_required(VERSION 3.16)
+project(hello)
+
+# set the output directory for built objects.
+# This makes sure that the dynamic library goes into the build directory automatically.
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/$<CONFIGURATION>")
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/$<CONFIGURATION>")
+
+# This assumes the SDL source is available in vendored/SDL
+add_subdirectory(vendored/SDL EXCLUDE_FROM_ALL)
+
+# Create your game executable target as usual
+add_executable(hello WIN32 hello.c)
+
+# Link to the actual SDL3 library.
+target_link_libraries(hello PRIVATE SDL3::SDL3)
+```
+
+# Configure and Build:
+```sh
+cmake -S . -B build
+cmake --build build
+```
+
+# Run:
+The executable should be in the `build` directory:
+
+```sh
+cd build
+./hello
+```
+
+If there wasn't an executable there despite the above Build section running successfully, it's likely because you're following this guide using the Visual Studio toolchain, it should instead be in the `build/Debug` directory:
+```sh
+cd build/Debug
+./hello
+```
+
+A more complete example is available at:
+
+https://github.com/Ravbug/sdl3-sample
+
+Additional information and troubleshooting is available in [README-cmake.md](README-cmake.md)
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